go south of solaceon town and you will see a tall tower near the small bit of water
At the right of Solecean city (Solecean Ruins).
Right from Solecean town. Pick the top path and jump on the last bar.
You get it from Riley on Iron Island.find it the solecean ruins
all of the unknown (pokemon) which you can show to the boy in the house who gives you seal cases and the HM defog.
Unown can be found equally in the side rooms that just include a rock in Solaceon Ruins. F-R-I-E-N-D Unown are in the main rooms and ! and ? are at the end of the Maniac's Tunnel (You need all Unown). So to get U, you just have to wander around and hope that you get a U eventually.
You buy them at sunnyshore city or show a kid in solecean town unown.
One place is in Jubilife City. The other is in Solecean Town, next to the Pokemon Center.
by the ruins to the right of the town
The ruins are right next to Socaleon town.
in the ruins in solaceon town
To get to the Undersea Ruins you have to surf east from Undella Town. There will be four diving spots. Dive into either of them to get into the Undersea Ruins. To get dive you need to talk to a lady in Undella Town.
Solaceon ruins are in Solaceon Town (The town with the daycare) They are to the far right. You'll jump down a few ledges to get to a cave. Enter the cave and you'll be in Solaceon Ruins. Hope this helps.